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Universe, Volume 5, Issue 9 (September 2019)
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Cover Story (view full-size image) Hawking’s prediction that black holes radiate indicates a basic inconsistency with quantum laws. [...] Read more. Hawking’s prediction that black holes radiate indicates a basic inconsistency with quantum laws. Some very basic assumptions imply that quantum information must escape black holes, to restore the validity of quantum mechanics. This appears to imply new physics, beyond classical general relativity, at distances comparable to the horizon radius. Various proposals for such new physics have been considered. A very conservative possibility is that there are new interactions between the quantum state of the black hole and nearby matter and fields. From the viewpoint of an observer near the horizon, these can behave like fluctuations in the spacetime geometry near the horizon. Some such scenarios could lead to the distortion of black hole images, arising from light propagation near the horizon, and be visible to the Event Horizon Telescope. View this paper.